Information processing apparatus, method, and program

Abstract

An object of the present invention is to provide an information processing apparatus capable of more easily evaluating a depression state. The present invention is an information processing apparatus including: means for inputting voice data uttered by a subject; means for acquiring time-series data of sound pressure in the input voice data; and means for obtaining a Sound Pressure Change acceleration index that is an index based on a force toward a center and a force away from the center of the acquired time-series data of the sound pressure.

The invention claimed is: 
     
       1. An information processing apparatus comprising:
 an inputter for inputting voice data uttered by a subject; 
 an acquirer for acquiring time-series data of sound pressure in the input voice data; and 
 a calculator for calculating a Sound Pressure Change acceleration index that is an index based on a force toward a center and a force away from the center of the acquired time-series data of the sound pressure. 
 
     
     
       2. The information processing apparatus according to  claim 1 , wherein
 the Sound Pressure Change acceleration index is a value obtained by dividing a value obtained by subtracting a sum of forces away from the center from a sum of forces toward the center of the acquired time-series data of the sound pressure by a total of a number of forces toward the center and a number of forces away from the center. 
 
     
     
       3. The information processing apparatus according to  claim 1 , further comprising
 an outputter for outputting the obtained Sound Pressure Change acceleration index. 
 
     
     
       4. A method executed by an information processing apparatus, the method comprising:
 inputting voice data uttered by a subject; 
 acquiring time-series data of sound pressure in the input voice data; and 
 obtaining a Sound Pressure Change acceleration index that is an index based on a force toward a center and a force away from the center of the acquired time-series data of the sound pressure. 
 
     
     
       5. A non-transitory storage medium on which is stored a program for causing a computer to function as the inputter, the acquirer and the calculator of the information processing apparatus according to  claim 1 .